KGNU - How On Earth
KGNU - How On Earth
How On Earth is a 25-minute news magazine about science, environment, technology, and more. The show is produced by volunteers at KGNU community radio in the Boulder-Denver area. We collect fascinating science headlines from around the world, produce features about the exciting research being done in our region, and interview the many accomplished scientists that make Colorado their home. How On Earth is also broadcast live at 8:35am (Mountain Time) every Tuesday morning in the Boulder-Denver area on KGNU: 88.5 FM / 1390 AM / Streaming on KGNU.org
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KGNU - How On Earth
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Latest episode
Jul 8, 2026
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Episodes
Medical Marijuana and Traffic Accidents//Ron Rosedale Critiques Body Mass Index Study 09.01.2013 23:10
HEADLINES: Diabetes Drug Metformin – University of Pennsylvania Researcher Morris Birnbaum reports in Nature that Metformin blocks a hormone that tells the liver to melt muscle to make more blood sugar. (Go here for an extended interview with Morris Birnbaum) Climate Change – Research shows that timely political action has a bigger impact than waiting. … Continue reading "Medical Marijuana and Tra...
Metformin Lowers Blood Sugars by Blocking the Hormone Glucagon – Extended Interview with Morris Birnbaum 09.01.2013 53:49
This is an extended version of the January 8th, 2013 interview with Morris Birnbaum, about how Metformin lowers blood sugars in diabetics by blocking the hormone glucagon.
New Study on BMI (Body Mass Index) and Longevity – Critique by Dr. Ron Rosedale – Extended Interview 09.01.2013 34:16
This is an extended version of the interview we broadcast on January 8th, 2013, featuring Ron Rosedale discussing the new study about BMI and Longevity.
Medical Marijuana and Reduced Traffic Fatalities – Extended Interview with Mark Anderson 09.01.2013 15:27
This is an extended interview with University of Montana Economist Mark Anderson, from the January 8th How On Earth broadcast.
Marijuana and Pot as Substitutions – Extended Interview with Ben Crost 08.01.2013 12:25
This is an extended interview from the January 8th, 2013 HowonEarth.
State Climatologist // Water Contamination 19.12.2012 24:45
Feature #1: (start time 5:09) Did you know that Colorado, and for that matter most states, have their own “state climatologist” – an expert who keeps tabs on the changing climate and its impacts in the state. In Colorado’s case it’s Nolan Doesken. He’s based out of the Colorado Climate Center at Colorado State University. … Continue reading "State Climatologist // Water Contamination"
Robert Arentz – Asteroid Impact Hazards & Ball Aerospace 12.12.2012 22:59
Main Feature (starts at 5:25). We talk with Dr. Robert Arentz from Ball Aerospace in Boulder about what’s new and interesting at Ball and in space missions in general including asteroid impact hazards on Earth and what can be done about it. Hosts: Joel Parker and Jim Pullen Producer: Joel Parker Engineer: Joel Parker Executive Producer: Jim Pullen Listen … Continue reading "Robert Arentz – Asteroi...
The Fat Switch – Richard Johnson MD 04.12.2012 24:47
Headlines: Chemicals that make drinking water cleaner, might increase allergies to food Rumors run amok about “historic” Mars Mission press conference West Nile Virus, Lyme’s disease, and Dengue fever on the rise Main feature (6 minutes in): We’re in that time of year when animals hibernate. Before they started their long winter’s nap, they … Continue reading "The Fat Switch – Richard Johnson...
The American Gut – What’s in YOUR Gut? 27.11.2012 23:01
We share three new findings that include contributions from Colorado scientists: 1. Diane McKnight coauthors study about Bacteria that thrive in a frigid hell-hole – the pitch-dark, super-salty, poisonous Lake Vida in Antarctica, 2. William Colgan offers new ways to calculate a glacier’s melting rates, 3. Alicia Karspeck offers a new weather forecast – Cloudy with … Continue reading "The Ameri...
Bernie Krause 25.11.2012 24:09
Today on How On Earth we speak with Dr. Bernie Krause about how soundscapes can help us understand the health of ecosystems. Dr. Krause has been recording the whole sounds of nature all over the world for 40 years. His new book is The Great Animal Orchestra: Finding the Origins of Music in the World’s … Continue reading "Bernie Krause"
Clean Tech Nation//Feedback in Climate Models 18.11.2012 23:18
Clean Tech Nation (start time: 4:57): Over the last few years renewable electricity generation has doubled, thanks in part to President Obama’s 2009 stimulus package. In fact, many clean technologies and industries have taken off, including solar, biofuels, green building and electric vehicles. But the stimulus money is about to run out, as is the … Continue reading "Clean Tech Nation//Feedback in...
The Dust Bowl / Population Growth 06.11.2012 23:18
Feature #1: The Dust Bowl (start time 6:53) As bad as the drought has been recently in Colorado and other states, it pales in comparison to the nearly 10-year-long drought of the 1930s. Its unrelenting and gargantuan dust storms inspired the name “The Dust Bowl.” In southeast Colorado and other Great Plains states, children died … Continue reading "The Dust Bowl / Population Growth"
Stopping Cancer in its Tracks – Telomerase Receptor Inhibition 06.11.2012 12:03
Last month, CU Nobel Prize Winner Tom Cech (Check) and colleagues announced a breakthrough in their quest to stop cancer. It involves an enzyme known as telomerase (tell-AH-mer-aze), which helps cells divide almost endlessly – helpful when a child is growing. In adults, most cells stop responding to telomerase. Instead they save up a limited number of cell … Continue reading "Stopping Cancer in...
The Life and Legacy of Rachel Carson 30.10.2012 23:23
The Life and Legacy of Rachel Carson (start time 6:20). The book Silent Spring, published in 1962, is widely credited for setting the stage for the modern environmental movement. Its author, Rachel Carson, an unassuming field biologist and writer, uncovered how in the process of killing crop pests, chemicals such as DDT were also killing birds, fish … Continue reading "The Life and Legacy of Rache...
CU Multidisciplinary Oil Production Study 24.10.2012 23:21
How can we best live with natural gas development? A University of Colorado team has just been awarded an NSF grant to tackle the problem. Here to chat with us about the study is Dr. Joe Ryan, the lead-PI of the multidisciplinary team. And the lead of the study’s air quality task, Dr. Jana Milford, … Continue reading "CU Multidisciplinary Oil Production Study"
Pledge Drive Show//Genetic-mutant Paganini 20.10.2012 24:28
This is our 2012 Fall Pledge Drive Show and our subject is Genes Gone Bad, or do you have to be a genetic-mutant superhuman to play Paganini? Helping us answer that question is Boulder’s own and world-renowned Dr. Gregory Walker. And in a very special treat, Gregory plays the magnificent Paganini Caprice No. 24, live … Continue reading "Pledge Drive Show//Genetic-mutant Paganini"
Boulder Nobel Science Winner//Searching for Sister Earth 10.10.2012 24:17
We talk with Travis Metcalfe, of Boulder’s Space Science Institute, where he is searching for Sister Earth and also part of the Blue Dot Project. As for why, the past two decades have witnessed accelerating progress on one of the most fundamental questions in astronomy: Are we alone in the Universe? Astronomers have already discovered … Continue reading "Boulder Nobel Science Winner//Searching fo...
Neanderthals//Antarctica 02.10.2012 24:06
Feature #1: Neanderthals (start time: 6:01) Our Neanderthal ancestors have long been maligned as rather dim-witted cave-dwellers. But they may have been brighter — and more colorful — more like us, shall we say. We turn to the BBC’s Science in Action for a look at new research into who these ancestors really were. Here’s … Continue reading "Neanderthals//Antarctica"
Big Waves // Omega 3 Fatty Acids 25.09.2012 24:46
Big Waves (start time 4:39): When does one plus one not equal two? When waves behave non-linearly, according to CU researchers Mark Ablowitz and Douglas Baldwin. The two have been researching how multiple water waves can add together to form a wave with a height much greater than twice the height of either wave. The mathematicians … Continue reading "Big Waves // Omega 3 Fatty Acids"
Colorado Drought // A More Perfect Heaven 18.09.2012 22:38
Colorado Drought Conference (start time 4:35): Experts are meeting at a conference in Denver this week to discuss the implications of prolonged drought conditions here in Colorado. How On Earth’ Susan Moran speaks with biologist Dr. Chad McNutt of the NOAA’s National Integrated Drought Information Center about wthe drought means for the ecosystem, and for Western … Continue reading "Colorado Droug...
Higgs-Boson: What is all the excitement about? 12.09.2012 23:49
We’ll talk about the World of a tiny particle called the Higgs-Boson, with CU Physicist Uriel Nauenberg. Nauenberg also speaks tonight at the Boulder Cafe Scientifique. Hosts: Joel Parker and Ted Burnham Producer: Shelley Schlender Engineer: Jim Pullen Executive Producer: Susan Moran
The Idea Factory – Bell Labs and the Great Age of American Innovation 04.09.2012 23:42
Bell Labs thrived from the 1920s to the 1980s, when it was most innovative and productive institution of the twentieth century. Long before America’s brightest scientific minds began migrating west to Silicon Valley, they flocked to the Bell Labs campus in the New Jersey suburbs. At its peak, Bell Labs employed nearly fifteen thousand people, … Continue reading "The Idea Factory – Bell Labs and th...
Public health risks of BPA 21.08.2012 25:10
(start time: 5:50). We Coloradoans pride ourselves on our healthy habits — eating right, exercising, and paying attention to what’s in the food we eat. Yet many of the things we use everyday, like water bottles, sunscreens, makeup, and – OK, soda cans — are full of toxic chemicals. Many of them are untested, and … Continue reading "Public health risks of BPA"
Planetary Sciences Budget // Curiosity’s RAD 15.08.2012 25:39
Curiosity’s RAD (start time 7:14). To design a successful manned mission to Mars, we’ll have to know a lot about the radiation environment between the Earth and Mars and on the planet’s surface. The Radiation Assessment Detector (RAD) instrument on Curiosity is designed to make those measurements. We talk with Southwest Research Institute’s Dr. Donald … Continue reading "Planetary Sciences Budget...
Beer Can Science 07.08.2012 23:27
Beer Can Science (start time 6:50) If you’re a beer drinker, you’ve probably noticed that there are a lot of cans on liquor store shelves these days. Here in Colorado, and elsewhere, more and more breweries are choosing to put their beer in cans. There are some good reasons for that, as you’ll hear in … Continue reading "Beer Can Science"
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